Add "CONSTRAINTS" section do directive documentation?

[Chris Johns]

On 21/1/21 6:28 am, Peter Dufault wrote:
> Totally agree.
> 
>> On Jan 20, 2021, at 10:58 , Gedare Bloom <gedare at rtems.org> wrote:
>>
>> I think this seems reasonable.
>>
>> On Wed, Jan 20, 2021 at 3:48 AM Sebastian Huber <sebastian.huber at embedded-brains.de> wrote:
>> Hello,
>>
>> I would like to add a "CONSTRAINTS" section to the directive
>> documentation (after or before the NOTES). For example in the NOTES of
>> rtems_timer_create()

I like this addition.

Chris